V-block workholder or drill jig



. Dec. 4,1923. 1,476,611

' G. H. HINES v-BLOGK WORKHOLDBR 0R DRILL` JIG FiledMarch 23. 1921 2 Sheets-Sheet 1 Dec. 4 1923.

G. H. HINES v-BLocK woRxHoLDER QR DRILL JIG Filed March 25. 1921 2 sheets-'sheet 2 scp ,GH/7mm,

l 'y mw Patented 4, 1.923.

UNITED STATES 1,476,611 PATENT oFFlcE.

GUSTAVE H. EINES, OFCHICAGO, ILLINOIS.

V-BLOCK WORKHOLDER 0R DRILL JIG.

Application led March 23, 1921. Serial No. 454,937.

as jigs or V-blocks. The principal object of the invention is to provide a novel .construction of a. work holder or jig adapted for securely retaining cylindrical bodies, such as shafts and the like, in position for the accurate transverse drilling of the same.

Another object of the invention is to provide for a device of the character mentioned, and one of a construction and arrangement admitting of the adjustment of the same to accommodatepcylindrical bodies ofiiferent diameters for the purpose aforesa1 A further object of the invention is to provide a device of the type mentioned with'a means for the adjustment of a drill guide along the work holder or jig in a; manner whereby to accurately determine or gauge the distances between the centers of the bores to be made in the cylindrical body secured thereon.

A still further object of the invention is to provide the device contemplated herein with means for accurately determining or gauging-'the distances between the centers of bores to be formed radially inward and spaced circumferentially of the cylindrical body held in the same.

Another object of the invention is to provide a work holder or jig of the character set forth, and one of a construction adapting the same for the support of varying lengths of cylindrical bodies or stocks. y

With the foregoing and other objects in view, the invention resides in the certain novel and useful construction and arrangement of parts as will be hereinafter more fully described, set forth in the appended claims, and illustrated in the accompanying drawings, in which:-

Figure 1 is a front elevation of the preferred embodiment of the invention,

` f Fig. 2 is a top plan view thereof,

, Fig. 3 is a vertical transverse section taken A on the line 3--3 of Fig. 2,

Figui is a view Similar to that of Fig. 3 but taken on the line 4 4 of Fig. 2,

F 1g. 5 is a fragmentary vertical longitudinal section of one end of the device,

F ig. 6 is a fragmentary 4plan view of the device corresponding to ,that as shown in Fig. 5, but with the end gauge removed from position thereon, and

Fig. 7 is a detail in end elevation of the end gauge support.

Referring to the drawings, in which similar characters of reference designate corresponding parts in the several views thereof, the numeral 10 designates a V-block formed of an elongated bar of Ametal having its upper face machined or milled out to form a longitudinally extending slot or groove 11 substantially in the form` of a Y in crossv section, the channel 12 forming the depending leg of the Y being disposed on the longitudinal center of the V-blocks so that the inclined face of the slot 11 are of equal area to either side thereof. The front vertical faces of the V-block lO'is machined or milled to form a shoulder portion 18 upon which is secured a scale plate 14 having its graduated front face flush in the plane of the vertical flat face of the shoulder portion 13,

which portion and the scale 14 extends thel entire length of the V-block.

The front and rear vertical faces of the V- block 10 are provided with longitudinally extending angle shaped grooves or guide'- Ways 15, the same lying in a common plane horizontally thereon slightly below the top grooved face of the same and further in each vertical face is a longitudinally eX- tending groove or guideway 16 positioned below a groove 15 and having parallel upper and lower walls. The groove 15 in thel front wall of the V-block 10 opens outwardly thereof in a planel immediately above the scale plate or strip 14, While the groove 16.

of this space is formed in the shoulder portion 13 spaced below the lower parallel edge of said scale plate or strip 14.

Mounted to be slidabl adjusted along the pair of grooves or gui eways 15 isa substantially inverted U-shaped yoke or bracket 17, and the lower ends of the side walls thereof are formed with inward projections corresponding in contour with and extending into the grooves 15 and the said yoke 17 has formed medially of its connected porill tion 18, overlying the upper grooved face 1l of the V-block, a circular opening in which is mounted a main bushing 19, also having a circular opening or bore in which is positioned interchangeable bushings 20, the latter being formed with bores of varying sizes one for use with a particularly sized drill bit. The bushing 19 is formed with a flanged head portion 19 an-d the bushings 20 with a similarly formed head portion `20, all of which head portions have their peripheral edges milled yor knurled substantially as shown, so as 'to facilitate the withdrawal and insertion to and from position in the bore of the yoke 17. The opposite sides of the V-block immediately above the grooves or guideways 15 are machined or milled inward of the top face thereof to a depth slightly greater than the major depth of the latter so that the outer Vertical faces of the legs of the yoke 17 eX- tend upward flush in the plane of the same. The outer face of the front leg of the yoke 17 is provided with an indicating block 14 which extends upward for a distance medially of the lower edge thereof, and which is adapte-d to register with the graduations formed on the out face of the scale plate 14.

Formed at `one end ofthe V.-block and opening upwardly on the longitudinal center thereof is formed a circular recess 21, which also opens outwardly of the end wall so as to receive and retain within the same al shiftable brake element 22, which is movable vertically and has secured thereto a transversely extending plate 23, which carries on its upper face, at its upper portion an annular ring or collar 24. the upper half of the circumference of which is formed with a graduated scale 25. Mounted on the annular ring or member 24, concentric with the outer face thereof is a clamp collar 26 of smaller diameter than the diameter at its outer portion of the former, but has its in ner portion formed with an inwardly and upwardly inclined flange 27 abutting the outer face of the member 24 with its peripheral edge of equal diameter therewith,

which flange has a single indicating point 28 formed on its peripheral edge for cooperation with the graduated scale 25 on the member 24 for the accurate adjustment of the collar 26 in its turning movement to either side of the zero point on the scale 25. The registering bores of the member 24 and the clamp collar 26 are disposed in line with the grooved face 11 of the V-block 10 and the inner diameters o f the same represent the greatest diameter for the cylindrical body to be supported on the latter for the working operation thereon. For the purpose of affording a firm grip of the end of a cylindrical body to be engaged in the bore of the clamp collar 26, other than oneof equal .diameter therewith, interchangeable y afirmar bushings 29 are provided for insertion into the bore thereof, each having a circular bore corresponding in diameter to that of a particular size of cylindrical body, or a length of stock. For clamping one end of a cylindrical body or length of stock, or a bushing 29 carried thereby, in .the bore of the collar 26, the latter is provided with diametrically opposed threaded openings into which are threaded clamp screws 30, the same being formed with knurled or milledheads 31 to facilitate their proper manipulation.

Slidable along the V-block 1() is an inverted substantially 5J-shaped clamp yoke having its leg portions 32depending at opposite sides thereof in close sliding contact and having their lower ends inturned, as at 33, for sliding engagement with the grooves or guideways 16. The connected portion 34 of the yoke is formed with a centrally disposed opening downwardly through which is threaded a clamp screw 35 having a circular enlarged upper end portion36 which has a bar or rod 37 extending diametrically of the same to rovide radially extending portions to faci itate the manipulation of the screw into and out of clamping engagement with the work to be laid along the i grooved face 11 of the V,block 10 Formed in the longitudinal center of the un-der face of the V-block is a groove 38. which opens downwardly of a groove`39 of greater width than the same, and slidably mounted in the groove 38 .is a bar 40 which is retained therein by means of a plate 41 secured in the groove 39. This bar 40 is of a length greater than that of the groove 38 so that one end' projects outwardly of one end of the V-block 10 opposite to that end on which is mounted a clamp collar 26. and rising from the free end of this bar 40 is a V-block section 10 of much less length than that of the main V-block body 10, but which is of the same cross sectional area and configuration, and in the opposite sides of which is formed grooved or guideways and 16 complemental to the grooves or guideways 15 and 16, respectively, of the latter.

n the use of the jig or work holder thus provided and assembled, a desired length of cylindrical stock7 such as a shaft section. is laid on the Vface of the block 10, anti. one end of the same is clamped between the screws of the clamp collar 26, and if the stock is' of less diameter than that of the gaged end of the stock and the screws 30 caused to engage the bushing for'the desired clamping action. The clamp yoke 34 is now moved to proper position and has the screw manipulated to hold the opposite end of the stock, and the latter is ready for the latter. a bushing 29 is secured on the en` arrasar termined by the registering of the indication arrow or mark 14', on the drill ide, with the proper graduations of the sca e 14. If a piece'of stock is of a much greater length than that of the main V-block 10, the supplemental V-block 10' is moved outward from the end of the latter to.

the required distance, and if desired, the clam yoke 34 can be moved with the block 10 or en gement with the extended end of the stoc For the drilling of a series of h oles circumferentially of the stock, the same can be turned for the purpose by the manipulation of the clamp collar 26 and the proper turning movement of the same, or the distances between the centers of the holes to be drilled, can be determined by the setting of the main indication arrow or mark 28, on the clamp collar 26, at necessary or desired raduations on the scale 24 to eithe side of t e zero point thereon. F rom the foregoing, it will be readily apparent that the invention provides for a uni- Cil versally adjustable jig or ll-block form of work holder, and one that is adaptable for supporting pieces of cylindrical stock varying in length throughout a comparatively wide range as well as in diameter, and one which is capable of being accurately adjustable for the drilling of holes in any desired relation one with respect to the other, either lengthwise, circumferentially, or spirally thereof, and for the accurate spacing of the distances between the centers of the openin s to be drilled. y

aving thus fully described the invention, lwhat is claimed, is

1. A jig comprising a V-block, means slidably engaging in the sides of the block for clamping a length of cylindrical stock lengthwise of said V-block, a drill guide engaging in the sides of and movable longitudinally of said ll'-block,-meansfor permitting of the accurate adjustment of said drill guide to predetermined distances between the center of the holes to be drilled in the stock, and a vertically movable bracket at one end of said tl-block and carrying circumferentially adjustable stock' holding means.

2. A jig comprising V-blocks opposed end to end, means or adjusting said blocks one with respect to the other for accommodating varying lengths of stock, means engaging in the sides of one of said blocks for clamping the stock in position, a drill guide engaging in the sides ofand movably mounted on one of said V-blocks, means forpcrmitting the accurate adjustment of said drill guide to predetermined distances between the centers of the holes to be drilled in the stock, and a-vertically movable bracket at one end of one of the blocks and carryinga vcircumferentially adjustable stock holding means.

3. A jig comprising an elongated V-block, clamping means movable along and engaging with said V-block for securing varying lengths of stock thereon, a drill guide movable along and engagin with said V-block,

-a raduated scale carrie lengthwise of said V- lock for the accurate adjustment of said drill guide for the drilling operation, and a vertically movable bracket carrying a circumferentially adjustable stock holding means.

4. A jig comprising an elongated AV-blocl, clamping means movable along said V-block for securing varying lengths of stock thereon, a drill guide movable along said V-block, a graduated scale carried lengthwise of said V-block for the accurate adjustment of said drill guide 'for the drilling operation, a vertically movable element -connected with .said block and carryin la circumferentially adjustable stock olding means provided with a graduated scale for accurately determining circumferential adjustment, and said block having each side provided with a pair of grooves with which engage saidclamping means anddrill guides.

5. A. 'i comprising an elongated V-block, a second g-block connected to said elongated V-block and movable outwardly from one end thereof for supporting in position varying lengths of cylindrical stock, a drill guide movable along said V-blocks, a clamping device movable along said ll-blocks for securing the stock in position thereon, a graduated scale carried on said elongated V-block for the accurate adjustment of said drill, guide, a vertically movable bracket connected with said elongated V-block and carryin a circumferentially adjustable stock ho din meansand said blocks having the sides aereof provided with grooves engaged by said drill guide and clamping device.

6. A jig comprising an elongated V-block, a relatively short il-block, a bar slidable longitudinally of. said elongatedl tl-block for supporting said short V-block at its free end, a drill guide extending over lil@ of c lindrical stock, a vertically movable brac et arranged at the end of said elongated V-block and carrying a circumferentially adjustable stock holding means, and a graduated scale associated with said means for accurately adjusting the circumferential adjustment thereof. v

7. A jig comprising an elongated V-block having each of its sides, provided with an angle shaped and asquared groove, one arran ed above the other, clamping means exten ing over said block and slidably engaging in said squared grooves and adapted to secure varying lengths of stock on theblock, a drill guide extending over said block and slidably engaging in said V-shapecl grooves,

I a graduated scale carried lengthwise of said block for accurately adjusting said drill during the drilling operation, and a vertically movable bracket at one end of said block for carrying a circumferentially adjustable stock holding means.

8. A jig comprising an elongated V-block having each of its sides provided with a pair of grooves, one arranged above the other, clamping means extending over said block and slidabl engaging in the lower groove and adapte to secure varying lengths on the stock, a drill guide extending over said block and slida-bly engagingin said upper grooves, a graduated scale extending lengthwise of said block for accurately adjusting said drill guide during the drilling operation, and a vertically movable bracket at one end of said block and carrying a circumferentially adjustable stock holding mea'ns.

9. A jig comprising a V-block, means engaging in the sides of the V-block for securing a length of stock thereon, a drill guide I movable longitudinally of said V-block, and

of said block for the accurate adjustment ofsaid drill guide during the drilling operation, 'and a bracket element at one end of said block and carrying a cireumferentially adjustable stock holding means.

l1. A jig comprising an elongated V-block having each of its sides provided with a pair of grooves, one arranged above the other, stock clamping means associated with and lslidably engaging in one of said grooves on each side ofthe block, a drill guide arranged over said block and slidably engaging in the other of said grooves on each side of the block, a graduated scale disposed lengthwise of said block for the accurate adjustment of said drill guide during the drilling operation, a bracket element at one end of said block and carrying a circumferentially adjustable stock holding means, and a gradu'- ated scale associated with said means for accurately determining the circumferentialadjustment of the stock.

lln testimony whereof, I alix my signature hereto.

GUSTAVE H. EINES. 

